Method for preparing Cu-Fe alloy under action of magnetic field

A cu-fe and alloy technology, which is applied in the field of preparation of Cu-Fe alloy under the action of a magnetic field, can solve the problems of lack of involvement, and achieve the effects of promoting orientation alignment, eliminating casting stress and reducing impurity scattering.

Active Publication Date: 2012-02-29
NORTHEASTERN UNIV LIAONING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are no reports on the homogenization, annealing and other heat treatment processes of Cu-Fe alloys with constant magnetic field and gradient magnetic field in the existing literature.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] (1) Preparation of cast Cu-Fe master alloy: Electrolytic copper and industrial pure iron are mixed in a weight ratio of 92:8, heated and smelted in a vacuum electric arc furnace, and cast in a water-cooled copper mold to prepare cast Cu-Fe master alloy. alloy;

[0025] (2) Solidification of Cu-Fe alloy under the action of a steady magnetic field: place the above-mentioned cast Cu-Fe master alloy at the center of a 10 T steady magnetic field, heat it to 1300°C, keep it warm for 20 minutes, and then heat it at 100°C / min rate cooling to room temperature;

[0026] (3) Homogenization treatment of the alloy under the action of a steady magnetic field: place the Cu-Fe alloy prepared in step (2) in the center of a 20 T steady magnetic field, heat it to 750 ° C, keep it warm for 12 hours, and slowly cool it to room temperature with the furnace;

[0027] (4) hot forging: heating the Cu-Fe alloy treated in step (3) to 650°C for hot forging, the total area reduction rate of hot f...

Embodiment 2

[0034] (1) Preparation of cast Cu-Fe master alloy: Electrolytic copper and industrial pure iron are mixed in a weight ratio of 85:15, heated and smelted in a vacuum induction furnace, and cast in a water-cooled copper mold to form a cast Cu-Fe master alloy. alloy;

[0035] (2) Solidification of Cu-Fe alloy under the action of a steady magnetic field: place the above-mentioned cast Cu-Fe master alloy at the center of a 0.1 T steady magnetic field, heat it to 1400°C, keep it warm for 40 minutes, and then heat it at 50°C / min rate cooling to room temperature;

[0036] (3) Homogenization treatment of the alloy under the action of a steady magnetic field: place the Cu-Fe alloy prepared in step (2) in the center of a 0.1 T steady magnetic field, heat to 900 ° C, keep it warm for 24 hours, and slowly cool to room temperature with the furnace;

[0037] (4) hot forging: heating the Cu-Fe alloy treated in step (3) to 700°C for hot forging, the total area reduction rate of hot forging is...

Embodiment 3

[0044] (1) Preparation of cast Cu-Fe master alloy: Electrolytic copper and industrial pure iron are mixed in a weight ratio of 85:25, heated and smelted in a vacuum induction furnace, and cast in a water-cooled copper mold to form cast Cu-Fe master alloy;

[0045](2) Solidification of Cu-Fe alloy under the action of a steady magnetic field: place the above-mentioned cast Cu-Fe master alloy at the center of a 20 T steady magnetic field, heat it to 1500°C, keep it warm for 60 minutes, and then heat it at a temperature of 5°C / min. rate cooling to room temperature;

[0046] (3) Homogenization treatment of the alloy under the action of a steady magnetic field: place the Cu-Fe alloy prepared in step (2) in the center of a 12 T steady magnetic field, heat it to 1000°C, keep it warm for 0.5 hours, and slowly cool it to room temperature with the furnace;

[0047] (4) hot forging: heating the Cu-Fe alloy treated in step (3) to 750°C for hot forging, the total area reduction rate of hot...

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Abstract

The invention relates to a method for preparing alloy, in particular to a method for preparing Cu-Fe alloy under action of a magnetic field. The method comprises the following steps: (1) preparing cast state Cu-Fe mother alloy; (2) solidifying the Cu-Fe alloy under the action of 0.1 to 20T static magnetic field; (3) homogenizing the alloy under the action of the static magnetic field; (4) hot forging at the temperature of between 650 and 750 DEG C; (5) drawing; (6) annealing the alloy under the static magnetic field; (7) re-drawing; (8) repeating thermomechanical magnetic treatment; and (9) annealing the alloy under the action of a gradient magnetic field. By using the method, the strong magnetic energy and strong alignment of the static magnetic field are sufficiently utilized, the strong magnetic force and other characteristics of the gradient magnetic field are combined, the matching relationship between the conductivity and tensile strength of the Cu-Fe alloy is effectively optimized, and a Cu-Fe alloy wire with conductivity of 56-78 % IACS and the tensile strength of 750-1,450MPa can be obtained.

Description

technical field [0001] The invention relates to a method for preparing an alloy, in particular to a method for preparing a Cu-Fe alloy under the action of a magnetic field. Background technique [0002] High-strength and high-conductivity Cu-Fe alloys are mainly used as contact wires, integrated circuit lead frame materials, high-pulse magnet coil wires, contact materials, etc., and are an important structural and functional material. However, during the alloying and processing of such Cu-Fe alloys, the electrical conductivity usually decreases significantly with the increase of strength. Therefore, the preparation of Cu-Fe alloys with good strength and electrical conductivity has always been a difficult research point. [0003] In recent years, with the rapid development of magnetic field technology, the strong magnetization and strong Lorentz force characteristics of the magnetic field have been widely used in the solidification and heat treatment of materials to generate ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C1/03C22C9/00C22F3/02C22F1/08
Inventor 王恩刚左小伟屈磊张林赫冀成
Owner NORTHEASTERN UNIV LIAONING
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